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zipcodes.pro — CITY/WA/COULEE-CITY

Coulee City ZIP code, Washington

The ZIP code for Coulee City, WA is 99115, and its area code is 509.

USPS city name
1 ZIP code
Population
439
Area code
509

Coulee City in numbers

About 439 people live in Coulee City, in 222 households. The median household income is $61,250 a year, 38% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $165,500 (71% below the Washington median), and median gross rent is $784 a month. The median age is 61.9; 8.3% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 20 minutes.

Population439Coulee City439
Households222Coulee City222
Median age61.9Coulee City61.9Washington38.3US 38.9
Median household income$61,250Coulee City$61,250Washington$98,141US $80,734
Median home value$165,500Coulee City$165,500Washington$564,600US $332,700
Median gross rent$784Coulee City$784Washington$1,760US $1,413
Bachelor's degree or higher8.3%Coulee City8.3%Washington39.6%US 35.7%
Mean commute20.2 minCoulee City20.2 minWashington26.6 minUS 26.4 min
Population density475 / sq miCoulee City475 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Coulee City town. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Coulee City

ZIP codes with the USPS city name Coulee City
ZIP City Type Population Median income Median home
99115 Coulee City , WA Standard 1,369 $62,708 $247,200

Map of Coulee City ZIP codes

99115

The ZIP codes of Coulee City, WA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Coulee City

The nearest larger towns are Soap Lake (1,508 people, 18 mi), Lakeview (1,584 people, 19 mi) and Ephrata (8,560 people, 24 mi).

Towns near Coulee City
TownPopulationDistance
Ephrata 8,560 23.6 mi
Moses Lake North 4,517 28.8 mi

More nearby: every ZIP code in Douglas County · Washington ZIP codes

Cite this page

zipcodes.pro. “Coulee City, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/coulee-city

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